As highlighted in our earlier post about Mondo’s Flat File sale, the year’s end is a time for poster companies to clear out their archives, and Mad Duck Posters is embracing Cyber Monday with their mystery tube sale. Mad Duck’s offering includes a diverse mix of prints including: Standard Runs, Scratch N’ Dents, Printer Proofs, unique 1/1s, Test Prints, Exclusive and Sold-Out Prints, as well as Archived Products. Each tube, priced at $75, will contain four posters. While there’s no limit on purchases, after four tubes, Mad Duck notes the possibility of receiving duplicates. These mystery tubes go on sale today at 12PM EST, so plan accordingly.